Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Publication date | 2008 |
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Host publication | Aluminum Alloys: Fabrication, Characterization and Applications - Proceedings of Symposia held during TMS 2008 Annual Meeting and Exhibition |
Pages | 79-84 |
Number of pages | 6 |
<mark>Original language</mark> | English |
Event | 137th TMS Annual Meeting and Exhibition, 2008 - New Orleans, LA, United States Duration: 9/03/2008 → 13/03/2008 |
Conference | 137th TMS Annual Meeting and Exhibition, 2008 |
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Country/Territory | United States |
City | New Orleans, LA |
Period | 9/03/08 → 13/03/08 |
Conference | 137th TMS Annual Meeting and Exhibition, 2008 |
---|---|
Country/Territory | United States |
City | New Orleans, LA |
Period | 9/03/08 → 13/03/08 |
Aimed at the maximisation of strength-toughness relationships in aluminium alloys, interrupted ageing has been proposed as a means to combine these properties. Such processing schedule initiates with a T6 short underageing (177 °C for up to 1 hour), followed by a dwell period at a lower temperature for periods of up to two weeks, and further re-ageing to the T6 temperature. By combining DSC with hardness, tensile and Kahn-tear testing, the present work studies several heat treatment scenarios and their impact in the strengthtoughness improvements in AA6061 and AA2024. The dwell temperature of 65 °C results in a hardness increase whereas interruption at room temperature decreases it in comparison to the standard T6. In AA2024, interruption at room temperature leads to the formation of GPB2 zones. The strength-toughness behaviour for the different heat treatment scenarios is presented.